Polymarket US reaches deal to halt Michigan sports contracts during appeal
Polymarket US reached a court-approved agreement with Michigan on Wednesday to pause state enforcement against its sports event contracts while a federal appeal proceeds. The platform will stop offering new sports contracts to Michigan customers and close remaining open positions by Nov. 25. Michigan regulators had demanded the platform cease the activity as part of the state's push against unlicensed sports betting operators. The deal temporarily halts the state's enforcement push while the federal case continues.
This deal carves out a safe harbor that Kalshi never found in Michigan. Polymarket US wins breathing room to argue federal preemption through the appeals process rather than fighting a state shutdown order head-on. The immediate cost is concrete: no new Michigan sports volume, positions forced closed, and a customer base that may not return. For Kalshi, Robinhood, and Coinbase — all facing active Michigan restrictions without a similar pause — Polymarket's negotiated standstill sets a template they may now demand.
The NFL's Supreme Court push for state gambling framing makes every state negotiation more urgent; a federal appeals loss here would collapse this shelter and invite copycat enforcement in Ohio and Tennessee where state courts already stripped preemption shields. Michigan's attorney general gains a tactical win too, clearing one platform from the market without burning resources on a full trial while multiple state cases run parallel.
Extends a month of intensified state-federal friction over event-contract preemption, joining active Michigan restrictions on Kalshi, Robinhood, and Coinbase alongside fresh actions in Utah, Louisiana, and Missouri.